This article is from the VW Performance FAQ, by with numerous contributions by Jan Vandenbrande others.
A:The front bearings on VW's tend to take a lot more abuse
than on other makes, so many people recommend that you
use a synthetic like Spectro to help them last longer.
However, there also seems to be some confusion on the
matter: most normal drivers are easily able to get 100K
mi. out of their front bearings. This is in contrast to
racers, who may have to change bearings every race or
two, and to GM products, which are supposed to have new
bearings every 50K mi. (according to a sign on the wall
of a local dealership). [sobiloff@lap.umd.edu (Blake
Sobiloff)]
How to improve/vented/cross drilled/pads
 
Continue to: